Can anyone tell me what type of gun is mounted on the forecastle of this PT boat just forward of the 20mm Oerliken? It has a circular shaped magazine/feeding device I am not familiar with. The rounds in it appear to be 40mm Bofors or something similar.
Original Navy caption reads: 060610-N-0975R-002 Portland Ore. (June 10, 2006) - Patrol Torpedo Boat (PT) 658 transit past U.S. Navy ships at the Portland Rose Festival. PT 658 was saved by volunteers and veterans from the Oregon area. The group successfully restored the 50-Ton World War II Motor Boat to full operational condition including the full armament and three original Packard V-12 engines. U.S. Navy photo by Mass Communication Specialist 1st Class Ralph Radford (RELEASED